from collections import OrderedDict


vocabulary = OrderedDict()
vocabulary['pop()'] = '从列表中取出一个元素'
vocabulary['insert()'] = '向列表中插入一个元素'
vocabulary['remove()'] = '从列表中移除某个元素'
vocabulary['for in'] = '遍历'
vocabulary['range()'] = '0,1,2，...'
for k, v in vocabulary.items():
    print(k + ': ' + v)
